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FKIE_CVE-2026-87794

Vulnerability from fkie_nvd - Published: 2026-09-09 10:22 - Updated: 2026-09-10 19:58
Severity
8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
bestzip versions 2.2.6 and 3.0.2 contain an argument injection vulnerability in the nativeZip function that allows attackers to inject arbitrary arguments to the Info-ZIP backend. Attackers can supply a malicious destination path combined with crafted source entries to execute arbitrary commands with Node.js process privileges. Fixed in 2.2.7 and 3.0.3.
References
disclosure@vulncheck.comhttps://github.com/nfriedly/node-bestzip
disclosure@vulncheck.comhttps://github.com/nfriedly/node-bestzip/blob/v3.0.2/lib/bestzip.js
disclosure@vulncheck.comhttps://github.com/nfriedly/node-bestzip/commit/2adb637b0acb05b8475de7db5af4b86ffcf40aaf
disclosure@vulncheck.comhttps://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc
disclosure@vulncheck.comhttps://github.com/nfriedly/node-bestzip/security/advisories/GHSA-xhwx-rch4-ph2v
disclosure@vulncheck.comhttps://www.npmjs.com/package/bestzip
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/bestzip-2.2.6-and-3.0.2-argument-injection-via-the-native-zip-destination
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.npmjs.com/package/bestzip",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/bestzip",
          "product": "bestzip",
          "repo": "https://github.com/nfriedly/node-bestzip",
          "vendor": "nfriedly",
          "versions": [
            {
              "lessThan": "2.2.7",
              "status": "affected",
              "version": "2.2.6",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.3",
              "status": "affected",
              "version": "3.0.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "bestzip versions 2.2.6 and 3.0.2 contain an argument injection vulnerability in the nativeZip function that allows attackers to inject arbitrary arguments to the Info-ZIP backend. Attackers can supply a malicious destination path combined with crafted source entries to execute arbitrary commands with Node.js process privileges. Fixed in 2.2.7 and 3.0.3."
    }
  ],
  "id": "CVE-2026-87794",
  "lastModified": "2026-09-10T19:58:20.507",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-09T10:22:34.397",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nfriedly/node-bestzip"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nfriedly/node-bestzip/blob/v3.0.2/lib/bestzip.js"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nfriedly/node-bestzip/commit/2adb637b0acb05b8475de7db5af4b86ffcf40aaf"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-xhwx-rch4-ph2v"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.npmjs.com/package/bestzip"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/bestzip-2.2.6-and-3.0.2-argument-injection-via-the-native-zip-destination"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Primary"
    }
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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